I have a windows ce indash multi media system that I run the software on. The back button does not seem to work. Also, I cannot enter a house number in when navigating.
when street numbers are available in the map data then you can search for it, for example New York/Manhattan/5th Avenue. Unfortunately house numbers are frequently missing in free maps, but are available in TomTom maps.
Free maps are created by volunteers at www.openstreetmaps.org - anybody can join and help to make maps better using their local knowledge.